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    • 1. 发明申请
    • METHOD AND DEVICE FOR SUPERVISING SECONDARY CIRCUIT OF INSTRUMENT TRANSFORMER IN POWER SYSTEM
    • 用于监控电力系统中仪器变压器二次电路的方法和装置
    • WO2010034149A1
    • 2010-04-01
    • PCT/CN2008/072480
    • 2008-09-24
    • ABB RESEARCH LTDSU, BinFAN, JianzhongJING, LeiLIU, QianjinWANG, JianpingYANG, Ying
    • SU, BinFAN, JianzhongJING, LeiLIU, QianjinWANG, JianpingYANG, Ying
    • G01R31/06G01R31/00
    • H02H7/261G01R31/027H02H3/05H02H3/40
    • A method for supervising a secondary circuit of an instrument transformer in a power system, the instrument transformer is connected to a power system, the method comprises: detecting, by a protection Intelligent Electronic Device, protection IED, which is connected to the secondary circuit of the instrument transformer and protects the power system component, disturbances in a signal from the instrument transformer; and determining whether a failure occurs in the secondary circuit of the instrument transformer, according to both a disturbance detection result from the protection IED and another disturbance detection result from at least one of other protection IEDs, the other protection IEDs comprising protection IEDs which are connected to other secondary circuits of the instrument transformer or to secondary circuits of another instrument transformer connected to the power system component, and protection IEDs which are connected to other instrument transformers connected to other power system components connected to the same busbar as the power component is connected to. A protection Intelligent Electronic Device, protection IED, for supervising a secondary circuit of an instrument transformer in a power system.
    • 一种监控电力系统中仪表变压器二次回路的方法,仪表变压器与电力系统连接,该方法包括:通过保护智能电子设备检测保护IED,该保护IED连接到二次回路 仪表变压器保护电力系统部件,仪表变压器信号的干扰; 以及根据来自保护IED的干扰检测结果和来自其它保护IED中的至少一个的另一个干扰检测结果,确定在仪表变压器的次级电路中是否发生故障,其他保护IED包括被连接的保护IED 到仪器变压器的其他二次回路或连接到电力系统组件的另一台仪表变压器的二次回路,以及与连接到连接到与功率部件相连的同一母线上的其他电力系统组件的其他仪表变压器连接的保护IED 至。 保护智能电子设备,保护IED,用于监控电力系统中仪表变压器的二次回路。
    • 5. 发明申请
    • HIERARCHICAL ACTIVE AND REACTIVE POWER CONTROL SYSTEM IN ELECTRIC VEHICLE CHARGING STATIONS AND METHOD THEREOF
    • 电动车辆充电站中的分层有功和无功功率控制系统及其方法
    • WO2012119300A1
    • 2012-09-13
    • PCT/CN2011/071567
    • 2011-03-07
    • ABB RESEARCH LTD.CHEN, YaoLIU, QianjinYUE, Chengyan
    • CHEN, YaoLIU, QianjinYUE, Chengyan
    • H02J7/02
    • H02J3/18B60L11/1816H02J3/1842Y02E40/22Y02E40/30Y02T10/7005Y02T10/7072Y02T90/14
    • A hierarchical active and reactive power control system in electric vehicle charging stations and a method thereof. The system and the method take fully utilization of the energy stored in batteries, and compensate voltage or frequency deviations. The method comprises the following steps: measuring, by a local controller, the active and reactive power of relevant charging units; sending the measured results to a central controller; measuring, by the local controller, a line-side frequency and voltage; calculating, by the central controller, a corresponding capacity margin of each charging unit based on the active and reactive power of each charging units; calculating an active and reactive power increment of each charging unit based on an external dispatch command and the calculated capacity margin (510); sending the increment to each local controller; adjusting, by each local controller, the active and reactive power of each charging unit based on the measurement of the line-side frequency and voltage and the increment from the central controller.
    • 电动汽车充电站中的分级有功和无功功率控制系统及其方法。 系统和方法充分利用电池中储存的能量,并补偿电压或频率偏差。 该方法包括以下步骤:由本地控制器测量相关充电单元的有功和无功功率; 将测量结果发送到中央控制器; 由本地控制器测量线路侧频率和电压; 基于每个充电单元的有功和无功功率,由中央控制器计算每个充电单元的相应容量余量; 基于外部调度命令和所计算的容量余量来计算每个充电单元的有功功率和无功功率增量(510); 向每个本地控制器发送增量; 基于线路侧频率和电压的测量以及来自中央控制器的增量,由每个本地控制器调整每个充电单元的有功功率和无功功率。